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How to get TI F28335 working in Simulinks 'external mode'?

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Martin Grüterich
Martin Grüterich on 5 Oct 2017
Commented: Martin Grüterich on 12 Oct 2017
Hello,
I am trying to run a TI F28335 using EXTERNAL MODE in Simulink in order to log signals in real time. Deploying to hardware & running in normal mode works fine except for some warnings, but running in external mode fails during code generation and outputs the following error message:
### Unsupported CCS Version. Skipping CCS Project creation
C:/PROGRA~3/MATLAB/SUPPOR~1/R2017b/3P778C~1.INS/TIC200~1.INS/TI-CGT~1.LTS/bin/cl2000 --compile_only --large_memory_model --silicon_version=28 --define="LARGE_MODEL" -i"/~SupportFiles/DSP280x_headers" -i"/~SupportFiles/DSP280x_headers/include" -i"C:/PROGRA~3/MATLAB/SUPPOR~1/R2017b/3P778C~1.INS/TIC200~1.INS/TI-CGT~1.LTS/include" --define="EXTMODE_DISABLEPRINTF" -v28 --float_support=fpu32 -ml -DMODEL=V16_R12_20171005_experimental -DNUMST=1 -DNCSTATES=0 -DHAVESTDIO -DON_TARGET_WAIT_FOR_START=0 -DTERMFCN=1 -DONESTEPFCN=1 -DMAT_FILE=0 -DMULTI_INSTANCE_CODE=0 -DEXT_MODE=1 -DINTEGER_CODE=0 -DMT=0 -DCLASSIC_INTERFACE=0 -DALLOCATIONFCN=0 -DTID01EQ=0 -DDAEMON_MODE=1 -DMW_PIL_SCIFIFOLEN=16 -DSTACK_SIZE=512 -D__MW_TARGET_USE_HARDWARE_RESOURCES_H__ -DRT -DTERMFCN=1 -DONESTEPFCN=1 -DMAT_FILE=0 -DMULTI_INSTANCE_CODE=0 -DEXT_MODE=1 -DINTEGER_CODE=0 -DMT=0 -DCLASSIC_INTERFACE=0 -DALLOCATIONFCN=0 -DTID01EQ=0 -DON_TARGET_WAIT_FOR_START=0 -DDAEMON_MODE=1 -DMW_PIL_SCIFIFOLEN=16 -DSTACK_SIZE=512 -DRT -DMODEL=V16_R12_20171005_experimental -DNUMST=1 -DNCSTATES=0 -DHAVESTDIO -IC:/V16_R2017b -IC:/V16_R2017b/V16_R12_20171005_experimental_ert_rtw -IC:/PROGRA~1/MATLAB/R2017b/extern/include -IC:/PROGRA~1/MATLAB/R2017b/simulink/include -IC:/PROGRA~1/MATLAB/R2017b/rtw/c/src -IC:/PROGRA~1/MATLAB/R2017b/rtw/c/src/ext_mode/common -IC:/PROGRA~1/MATLAB/R2017b/rtw/c/ert -IC:/PROGRA~1/MATLAB/R2017b/toolbox/coder/rtiostream/src/utils -IC:/ProgramData/MATLAB/SupportPackages/R2017b/toolbox/target/supportpackages/tic2000/inc -IC:/PROGRA~1/MATLAB/R2017b/toolbox/shared/can/src/scanutil -IC:/ProgramData/MATLAB/SupportPackages/R2017b/toolbox/target/supportpackages/tic2000/src -IC:/PROGRA~1/MATLAB/R2017b/toolbox/rtw/targets/common/can/blocks/tlc_c -IC:/ProgramData/MATLAB/SupportPackages/R2017b/toolbox/target/shared/externalmode_daemon/include --output_file=MW_c28xx_board.obj MW_c28xx_board.c
[...]
<Linking>
"C:/ProgramData/MATLAB/SupportPackages/R2017b/toolbox/target/supportpackages/tic2000/src/c28335.cmd", line 65: error:
program will not fit into available memory. placement with
alignment/blocking fails for section ".text" size 0x4b68 page 0. Available
memory ranges:
RAML4L7 size: 0x4000 unused: 0x3c50 max hole: 0x3c50
error: errors encountered during linking;
"../V16_R12_20171005_experimental.out" not built
>> Compilation failure
gmake: *** [../V16_R12_20171005_experimental.out] Error 1
The make command returned an error of 2
Der Befehl "An_error_occurred_during_the_call_to_make" ist entweder falsch geschrieben oder
konnte nicht gefunden werden.
### Build procedure for model: 'V16_R12_20171005_experimental' aborted due to an error.
Error(s) encountered while building "V16_R12_20171005_experimental":
### Failed to generate all binary outputs.
What am I doing wrong? CodeComposerStudio version is v6.1.1.00022 & Matlab version is 2017b. Thank you for your answers!

Answers (1)

Suze Zhang
Suze Zhang on 11 Oct 2017
Hi Martin,
Noticing from this line of the error message you posted:
Available
memory ranges:
RAML4L7 size: 0x4000 unused: 0x3c50 max hole: 0x3c50
It seems that your model size is too large to fit to the F28335's RAM.
Instead, in the Configuration Parameters > Coder Target, check the option "Boot From Flash", which will use its flash memory instead of the RAM.

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